Perhaps Van loses his memory and Wendy has to help him regain it while also protecting him from enemies who want to take advantage of his vulnerable state. This would add an element of mystery and emotional depth to the story.
They could team up to take down a powerful and corrupt organization in the Gun x Sword world. Van's strength and Wendy's intelligence would be key assets in this fight.
In a more light - hearted fanfiction, Van and Wendy could enter a competition in the Gun x Sword world. They would have to use their skills in creative ways to win, and in the process, their relationship would grow as they cheer each other on and work together towards victory.
In a Gun x Sword Van and Wendy fanfiction, they could start as strangers. Maybe Wendy is in some kind of trouble and Van comes to her rescue. As they travel together, they gradually develop a deep friendship. They share their stories of the past, and this connection helps them face the dangerous foes in the post - apocalyptic world of Gun x Sword.
One common theme could be adventure. Given the nature of the 'gun x sword' world, fanfics might focus on Wendy and Van going on exciting adventures together, facing various challenges along the way.
I'm not sure of specific 'gun x sword wendy x van fanfic' stories off - hand. You could try searching on fanfiction websites like Archive of Our Own or FanFiction.net. They usually have a wide variety of fan - created stories.
One idea is that there's a magical carnival that comes to Gravity Falls. Dipper and younger Wendy go there together. They enter a funhouse that turns out to be a portal to a parallel dimension. In this dimension, everything is opposite, and they have to find their way back. Along the way, they rely on each other's strengths. Dipper's knowledge of the supernatural helps them understand the strange rules of this dimension, and Wendy's bravery gets them through dangerous situations. Their bond becomes stronger as they face these challenges.
A possible plot could be set in a parallel universe where Wendy is not a villain. She and Luigi meet at a grand Mushroom Kingdom festival. They both share a love for a particular type of mushroom - based food that is rare at the festival. As they search for this food together, they face various challenges like competing with other characters for the last piece, and through these shared experiences, they fall in love.
One interesting plot idea could be Wendy and Erza teaming up for a special mission that no one else can handle. Maybe they have to go into a dangerous, enchanted forest where magic behaves strangely. Along the way, Wendy's healing abilities and Erza's combat skills complement each other, and they start to understand each other on a deeper level, forming a strong friendship that could potentially turn into something more in the eyes of the readers.
Maybe in the fanfiction, there is a magic spell that fuses Naruto and Wendy's powers together. This new power is needed to defeat an ancient evil that is awakening. They have to learn to control this combined power and also deal with the cultural differences between the ninja world and the Fairy Tail world. For example, Naruto is used to stealth and quick strikes, while Wendy is more accustomed to magical battles in open areas.
A fanfiction plot could involve Webber and Wendy finding a mysterious object that seems to have some sort of magical power. They both have different ideas on how to use it. Webber wants to use it to make friends with more creatures, while Wendy thinks it could be a way to bring her sister back more fully. Their differences in opinion cause some tension at first, but they eventually work it out and discover the true purpose of the object together.
Another plot could be that Casper and Wendy get into trouble when they accidentally break a major rule in the ghost world. They then have to find a way to fix it before the Ghost Council punishes them. They might seek the help of some of Casper's friendly uncles, who are more experienced in dealing with such situations.
One plot idea could be that Stan and Wendy face the challenges of teen pregnancy together. They might struggle with telling their parents and friends, and deal with the changes in their school and social lives. For example, Wendy could be worried about her future academic prospects while Stan tries to find a part - time job to support their upcoming family.